swt3-ai 0.2.6

SWT3 AI Witness SDK: cryptographic attestation for AI inference

Witness your AI agents, don't just monitor them. Deterministic accountability for every AI action.

swt3-ai

SWT3 AI Witness SDK:continuous, cryptographic attestation for AI systems. Prove your models are running approved weights, safety guardrails are active, inferences are traceable, and fairness thresholds are met. All without your prompts or responses ever leaving your infrastructure.

Built on the SWT3 Protocol, the same cryptographic witnessing layer trusted for federal compliance (NIST 800-53, CMMC, FedRAMP).

Why SWT3?

AI agents are making production decisions, but when regulators ask "prove your AI followed the rules," most teams have nothing but logs and dashboards. SWT3 produces cryptographic, tamper-proof evidence of every AI action. No prompt data leaves your infrastructure. The EU AI Act (enforcement: August 2, 2026) requires exactly this.

See It Work in 10 Seconds

No API keys. No account. No network calls.

pip install swt3-ai
python -m swt3_ai.demo

You'll see the full SWT3 witnessing pipeline: hash, extract, clear, anchor, verify, all running locally. When you're ready for production, keep reading.

Three Lines of Code

from swt3_ai import Witness
from openai import OpenAI

witness = Witness(
    endpoint="https://sovereign.tenova.io",
    api_key="axm_live_...",
    tenant_id="YOUR_ENCLAVE",
)
client = witness.wrap(OpenAI())

# That's it. Every inference is now witnessed.
response = client.chat.completions.create(
    model="gpt-4o",
    messages=[{"role": "user", "content": "Summarize this contract..."}],
)
# response is untouched, use it exactly as before
print(response.choices[0].message.content)

No code changes. No performance impact. No data leakage.

Quick Start (Try It Locally)

Want to see the SDK work before connecting to a live endpoint? Use factor_handoff to write witness anchors to local JSON files. No account needed.

from swt3_ai import Witness
from openai import OpenAI

witness = Witness(
    endpoint="https://sovereign.tenova.io",
    api_key="test",                # any string, handoff runs before network flush
    tenant_id="LOCAL_TEST",
    factor_handoff="file",         # write anchors to ./swt3-handoff/ as JSON
)
client = witness.wrap(OpenAI())

response = client.chat.completions.create(
    model="gpt-4o",
    messages=[{"role": "user", "content": "What is the EU AI Act?"}],
)
print(response.choices[0].message.content)

# Check ./swt3-handoff/ - you'll see a JSON file per inference with:
#   - SHA-256 fingerprint
#   - Model ID, latency, token count
#   - Clearing level applied
#   - Full factor data for independent verification

When you're ready for production, create a free account to get your tenant ID and API key. Point the SDK at your enclave and every inference is witnessed, anchored, and verifiable.

What Happens Per Inference

1. Intercept: The SDK wraps your AI client transparently
2. Hash: Prompts and responses are SHA-256 hashed locally
3. Extract: Model version, latency, token count, guardrail status captured as numeric factors
4. Clear: Raw text is purged from the wire payload (configurable clearing level)
5. Anchor: Factors are batched and flushed to the SWT3 Witness Ledger in the background
6. Return: Your original response returns untouched, zero added latency

The result: an immutable, cryptographic proof that your AI followed the rules, without the auditor ever needing to see the sensitive data.

Supported Providers

Provider	Client	Status
OpenAI	openai.OpenAI	Supported
Anthropic	anthropic.Anthropic	Supported
AWS Bedrock	bedrock-runtime	Planned
Azure OpenAI	openai.AzureOpenAI	Planned
Ollama / vLLM	Local models	Planned

OpenAI

from swt3_ai import Witness
from openai import OpenAI

witness = Witness(endpoint="...", api_key="axm_...", tenant_id="...")
client = witness.wrap(OpenAI())

response = client.chat.completions.create(
    model="gpt-4o",
    messages=[{"role": "user", "content": "Hello"}],
)

Anthropic

from swt3_ai import Witness
from anthropic import Anthropic

witness = Witness(endpoint="...", api_key="axm_...", tenant_id="...")
client = witness.wrap(Anthropic())

message = client.messages.create(
    model="claude-sonnet-4-20250514",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello"}],
)

Clearing Levels

The Clearing Engine controls what leaves your infrastructure. Your code always gets the full response. Clearing only affects the wire payload sent to the witness ledger.

Level	Name	What's on the wire	Use case
0	Analytics	Hashes + factors + model ID + provider + guardrail names	Internal analytics, non-sensitive workloads
1	Standard	Hashes + factors + model ID + provider metadata	Default. Production SaaS, enterprise apps
2	Sensitive	Hashes + factors + model ID only	Healthcare, legal, PII-adjacent workloads
3	Classified	Numeric factors only. Model ID hashed. No metadata.	Defense, classified environments, air-gapped

# Level 2: Sensitive, no provider names, no guardrail names on the wire
witness = Witness(
    endpoint="...",
    api_key="axm_...",
    tenant_id="...",
    clearing_level=2,
)

At Level 1+, raw prompts and responses never leave your infrastructure. Only SHA-256 hashes and numeric factors travel on the wire. This satisfies both GDPR Article 17 (right to erasure) and EU AI Act Article 12 (record-keeping) simultaneously.

What Gets Witnessed

Each inference produces anchors for these AI procedures:

Procedure	Domain	What it proves
AI-INF.1	Inference	Prompt and response were captured (provenance)
AI-INF.2	Inference	Latency within threshold (detects model swaps)
AI-MDL.1	Model	Deployed model matches approved hash (integrity)
AI-MDL.2	Model	Model version identifier recorded (tracking)
AI-GRD.1	Guardrail	Required safety filters were active (enforcement)
AI-GRD.2	Safety	No refusal or content filter triggered (content safety)
AI-TOOL.1	Tool Use	Agent tool/function call recorded (latency, success)
AI-ID.1	Identity	Witness instance identity attested (agent accountability)

Each procedure maps to both NIST AI RMF functions and EU AI Act articles. When a CISO looks at the ledger, they don't see "inference captured." They see "Article 12 Compliance: Verified."

View an Anchor

A Level 1 anchor for AI-INF.1 (Inference Provenance). This is what reaches the witness ledger. No prompts, no responses, just cryptographic proof.

{
  "procedure_id": "AI-INF.1",
  "factor_a": 1,
  "factor_b": 1,
  "factor_c": 0,
  "clearing_level": 1,
  "anchor_fingerprint": "c059eb5938c0",
  "anchor_epoch": 1774800000,
  "fingerprint_timestamp_ms": 1774800000000,
  "ai_prompt_hash": "315f5bdb76d078c4",
  "ai_response_hash": "a1b2c3d4e5f60718",
  "ai_latency_ms": 842,
  "ai_model_id": "gpt-4o",
  "ai_context": {
    "provider": "openai",
    "guardrails": ["content-filter", "pii-redaction"]
  }
}

The anchor_fingerprint is computed from SHA256("WITNESS:{tenant}:{procedure}:{fa}:{fb}:{fc}:{ts}"). Anyone with the factors can independently verify the math.

Resilience (Flight Recorder)

The SDK never blocks your inference call. Witnessing happens in a background thread.

If the witness endpoint is unreachable (network outage, air-gapped deployment), payloads move to a dead-letter queue instead of being dropped. When connectivity is restored, the backlog drains automatically with exponential backoff.

witness = Witness(
    endpoint="...",
    api_key="axm_...",
    tenant_id="...",
    buffer_size=50,       # flush every 50 anchors
    flush_interval=10.0,  # or every 10 seconds
    max_retries=5,        # retry 5 times before dead-lettering
)

# Check dead-letter status
print(f"Pending: {witness.pending}")

Configuration

Parameter	Default	Description
endpoint	required	Witness endpoint URL
api_key	required	API key (axm_* prefix)
tenant_id	required	Your enclave identifier
clearing_level	1	Clearing level (0-3)
buffer_size	10	Flush after N anchors
flush_interval	5.0	Flush after N seconds
timeout	10.0	HTTP timeout for flush
max_retries	3	Retry count before dead-letter
latency_threshold_ms	30000	AI-INF.2 latency threshold
guardrails_required	0	AI-GRD.1 required guardrail count
guardrail_names	[]	Names of active guardrails
factor_handoff	None	"file" to enable local factor export
factor_handoff_path	None	Directory for factor handoff files

Factor Handoff (Clearing Level 2+)

At Clearing Level 2 or 3, some or all verifiable data is stripped from the wire before it reaches the witness endpoint. The Factor Handoff ensures your factors are safely written to a local directory before clearing proceeds. If the write fails, the payload is not transmitted.

witness = Witness(
    endpoint="https://sovereign.tenova.io",
    api_key="axm_live_...",
    tenant_id="YOUR_ENCLAVE",
    clearing_level=3,
    factor_handoff="file",
    factor_handoff_path="/secure/vault/factors/",
)

Each anchor gets its own JSON file (named by fingerprint) containing the full uncleared factors and metadata needed for independent re-verification. Files are written with 0600 permissions.

For the full protocol specification, see the Factor Handoff Protocol.

Custom Pipelines

For non-standard LLM integrations, use the decorator or manual API:

@witness.inference()
def my_custom_llm(prompt: str) -> str:
    # Your custom inference logic
    return result

# Or manual recording
from swt3_ai.types import InferenceRecord
from swt3_ai.fingerprint import sha256_truncated

record = InferenceRecord(
    model_id="my-model-v2",
    model_hash=sha256_truncated("my-model-v2"),
    prompt_hash=sha256_truncated(prompt),
    response_hash=sha256_truncated(response),
    latency_ms=elapsed_ms,
    provider="custom",
)
witness.record(record)

Installation

pip install swt3-ai

# With provider extras
pip install swt3-ai[openai]
pip install swt3-ai[anthropic]
pip install swt3-ai[all]

Regulatory Coverage

The SWT3 AI Witnessing Profile maps to:

• EU AI Act: Articles 9, 10, 12, 13, 14, 53, 72
• NIST AI RMF: GOVERN, MAP, MEASURE, MANAGE (10 subcategories)
• ISO 42001: Annex A AI management controls
• NIST 800-53: SI-7 (integrity), AU-2/AU-3 (audit), AC controls

AI Witness-as-a-Service

SWT3 AI Witness is available as a managed service through Axiom Sovereign Engine:

Tier	Retention	Key Features	Price
Open	7 days	SDK, dashboard, public verify	Free
Pro	90 days	+ AI conformity exports, regulatory reports	$499/mo
Enclave	1 year	+ OSCAL, Gate API, attestations, webhook feeds	$9,500/mo
Sovereign	Custom	+ White-glove ATO sprint, mock assessment, on-prem	Book Assessment

1,100+ downloads across npm and PyPI. 151 procedures. 13 frameworks. Patent pending.

Ready to Witness Your AI?

Get an API key and start witnessing in under 10 minutes:

• Create a Free Account - instant API key, start witnessing in 5 minutes
• Quickstart Guide - 10-minute integration walkthrough
• Book a Strategy Call - enterprise, on-prem, or Sovereign tier

Compliance & Privacy

Your prompts and responses never leave your infrastructure. The SDK computes SHA-256 hashes locally and transmits only irreversible hashes and numeric factors. At Clearing Level 3, even the model name is hashed.

• Data Flow and Privacy Architecture - Visual data boundary for legal and DPO review
• Clearing & Data Sovereignty Addendum - Shared responsibility, incident response SLA, regulatory applicability
• Air-Gap Deployment Guide - Zero-egress operation, sneakernet sync, offline verification

Documentation

• SDK Developer Docs - Quickstart, providers, clearing levels, configuration
• Factor Handoff Protocol - How factors are securely transferred to your custody
• CMMC Compliance Overlay - Control mappings for defense industrial base

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Support the Standard

If you believe AI systems should prove they followed the rules, give us a star. Every star signals that the industry is ready for an accountability standard.

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SWT3: Sovereign Witness Traceability. We don't run your models. We witness them.

TeNova: Defining the AI Accountability Standard. One protocol. Zero Integrity Debt. Total Sovereignty.

SWT3 and Sovereign Witness Traceability are trademarks of Tenable Nova LLC. Patent pending. Apache 2.0 licensed.